Concentration (Details)	12 Months Ended
	Dec. 31, 2011 State Property
Concentration
Number of properties	473
Number of states in which properties are located	44
Hotels
Concentration
Number of properties	288
Geographic concentration | Hotels | Ontario, Canada
Concentration
Number of properties	2
Geographic concentration | Investment | California | Minimum
Concentration
Concentration risk, percentage	6.00%
Geographic concentration | Investment | California | Maximum
Concentration
Concentration risk, percentage	12.00%
Geographic concentration | Investment | Texas | Minimum
Concentration
Concentration risk, percentage	6.00%
Geographic concentration | Investment | Texas | Maximum
Concentration
Concentration risk, percentage	12.00%
Geographic concentration | Investment | Georgia | Minimum
Concentration
Concentration risk, percentage	6.00%
Geographic concentration | Investment | Georgia | Maximum
Concentration
Concentration risk, percentage	12.00%
Geographic concentration | Investment | Hotels | Ontario, Canada
Concentration
Concentration risk, percentage	1.00%
Geographic concentration | Investment | Hotels | Puerto Rico
Concentration
Concentration risk, percentage	2.00%